Saw-clamp.



PATENTED SEPT. 1

W. lF. SCHMIDT.

SAW CLAMP.

APPLIUATION FILED Nov. 24, 190s.

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WILLIAM F. SCHMIDT, OF HASTINGS-UPON-HUDSON, NEW YORK.

SAW-CLAMP.

Specification of Letters Patent.

Patented Sept. l, 1908.

Application filed November 24, 1906. Serial No. 344,932.

T o all whom 'it may concern:

Be it known that I, WILLIAM F. SCHMIDT, a citizen of the United States, residing at Hastings-upon-I-Iudson, in the county of festchester and State of New York, have invented new and useful Improvements in Saw- Clamps, of which the following is a specification.

The invention relates to an improvement in saw clamps particularly constructed for the secure clamping of saw blades to permit any desired operation in connection with the teeth of the latter.

The main object of the present invention is the provision of a novel form of saw clamp in which the blade is securely and properly held during the jointing and filing operations, the clamp being formed to provide for the effective coperation therewith of a iointer to aline the cutting points of the teeth, vand a filer to sharpen the edges of the teeth.

The invention will be described in the following specification, reference being had particularly to the accompanying drawings, in which Figure 1 is a view in side elevation illustrating the improved clamp with the jointer of the present invention in cooperative relation thereto, a saw blade being shown in dotted outline within the clamp, Fig. 2 is a sectional view of the same on the line 2`2 of Fig. 1, Fig. 3 is an end elevation of the same.

Referring particularly to the drawings, wherein similar reference numerals indicate like parts throughout the several views, the improved clamp of the present invention comprises end blocks 1 approximately rectangular in transverse section and each bifurcated longitudinally for a portion of the length, as at 2. The bifurcation extends through the upper wall of the block, thereby providing spaced sections 3 and 4 between which the saw .is adapted to be held. The relatively inner or proximate faces of the sections 3 and 4 are laterally recessed at 5 to provide a channel 6 within the block. The recesses 5 terminate at the lower end below the lower wall of the channel 2, and at the upper end some distance from the upper 'surface of the block. The upper wall of each recess 5 is inclined inwardly and upwardly, as at 7, so that the channel 6 is in effect provided with an inverted V-shaped upper wall. In the channels 6 of each block is arranged a clamping block 3, comprising a base to which are connected upwardly extending spring arms 9, the upper free ends of the latter being thickened in a relatively inward direction, as at l0, thereby spacing the arms 9 a relatively greater distance apart below the portions 10 than between said portions, as clearly shown in Fig. 2. The upper surfaces of the arms 9, or more exactly the portions 10 of said arms are inclined, as at 11, to correspond with the inclination 7 of the upper wall of the channel. The relative height and width of the clamping block 8 is less than the corresponding dimensions of the channel 6 thereby permitting independent movement of said block within the channel, it being understood in this connection that the natural tension of the arms 9 is such that said arms are normally in contact with the side walls of the recesses 5, thereby disposing the sections 1() of said arms spaced the greatest possible distance apart. Each block 1 is formed at its lower portion with a longitudinally extending slot 12, communicating at its upper end with the channel 6, and in this slot is arranged a disk 13 eccentrically secured upon a pivot pin 14 arranged transverse the slot, the disk being preferably projected in the form of a handle 15, extending below the lower edge of the block.

From the construction described it is evident that in one position of the disk 13 the base plate of the clamping block 8 will be permitted to rest upon the lower wall of the channel 6 and the sections 10 ofthe clamping block spaced the greatest distance apart and in contact with the side walls of the channels 5. Operation of the disk 13 will cause said disk to engage the base plate of the clamping block and force said block upward within the channel, thereby causing the inclined surfaces of the sections 10 of the block to ride into contact with the inclined walls 7 of the channel, with the result that said sections are forced together against the spring pressure of the arms 9.

Each block 1 is provided with means for supporting the blocks from a table or bench, said means comprising the usual spaced plates 16 and 17 arranged to embrace the edge of a table or bench between them, the latter being provided with the usual set screw 18 for clamping engagement with the lower surface of the support. The blocks 1 operation, as described..

are connected by side bars 19, disposed in alinement with the respective sections 3 and 4 of the block and corresponding in height to the distance from the upper surface of the block to the extreme upper edge ofthe wall 7 of the channel 6.-

Itis to be understood that the side bars 19 are preferably formed integral with the blocks l, so that said bars constitute the upper portion of the block, though, if desired, said bars may be separately formed and connected to the blocks in any manner desired, the independent construction providing more particularly for an implement which may be readily packed into small compass for transportation from place to place. Assuming, however, that the clamp is an integral structure, as shown, said clamp comprises spaced side bars from which, adjacent their ends, de-

pend blocks adapted for removable connection toa support and integrally provided with clamping blocks which may be moved into and out of clamping position by manual It is, of course, to be understood that the slot 2 is of a width to receive a saw blade, as 20, and that the lower terminals of the slots of the respective blocks are in diagonal alinement as respects the upper' edge of the side bars 19, thereby insuring such support of the saw blade when within the clamp as will dispose the cutting edge of said blade an equal distance throughout its length above the upper edge of the bars 19.

ber, and means for elevating said clamping blocks within the chamber.

2. A saw clamp comprising side bars arranged in spaced parallel relation, a block depending from said bars and formed with a slot to register with the space between the bars, said block being formed with an interior chamber having an upper wall of inverted V-shape, clamping blocks arranged within and of lesswidth and length than said chamber, the upper surface of said blocks corresponding in shape to the upper wall of the chamber, and disks eccentrically mounted in the depending blocks and underlying and contacting with the clamping blocks.

In testimony whereof, l affix my signature in presence of two witnesses.

VILLIAM F. SCHMIDT.

Witnesses:

FRED GoRLIcn, HARRY STECKERT. 

